Year	Number
1960	50094
1961	51184
1962	52309
1963	53473
1964	54651
1965	56312
1966	58438
1967	60420
1968	62270
1969	64150
1970	66112
1971	68153
1972	70239
1973	72336
1974	74423
1975	76527
1976	78668
1977	80790
1978	82874
1979	85014
1980	87303
1981	89707
1982	92145
1983	94553
1984	97097
1985	100072
1986	103400
1987	106833
1988	110225
1989	113559
1990	116993
1991	120499
1992	123912
1993	127190
1994	130280
1995	133257
1996	136154
1997	138876
1998	141377
1999	143644
2000	145914
2001	148364
2002	150901
2003	153458
2004	156014
2005	158562
2006	163497
2007	171583
2008	180542
2009	189739
2010	199169
2011	208805
2012	218617
2013	228512
2014	239142
2015	250493
2016	261719
2017	272628
2018	282965
2019	291624
2020	297122
2021	300736
2022	301315
2023	298591